/*
 * Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <Kernel/Devices/GPU/VMWare/Console.h>
#include <Kernel/Tasks/WorkQueue.h>

namespace Kernel {

constexpr static AK::Duration refresh_interval = AK::Duration::from_milliseconds(16);

NonnullLockRefPtr<VMWareFramebufferConsole> VMWareFramebufferConsole::initialize(VMWareDisplayConnector& parent_display_connector)
{
    auto current_resolution = parent_display_connector.current_mode_setting();
    return adopt_lock_ref(*new (nothrow) VMWareFramebufferConsole(parent_display_connector, current_resolution));
}

VMWareFramebufferConsole::VMWareFramebufferConsole(VMWareDisplayConnector const& parent_display_connector, DisplayConnector::ModeSetting current_resolution)
    : GenericFramebufferConsole(current_resolution.horizontal_active, current_resolution.vertical_active, current_resolution.horizontal_stride)
    , m_parent_display_connector(parent_display_connector)
{
    auto [process, _] = Process::create_kernel_process("Console Refresh Task"sv, [this]() { refresh_task(); }).release_value_but_fixme_should_propagate_errors();
    m_refresh_process = move(process);
}

void VMWareFramebufferConsole::set_resolution(size_t width, size_t height, size_t pitch)
{
    m_width = width;
    m_height = height;
    m_pitch = pitch;
    m_dirty = true;
}

void VMWareFramebufferConsole::flush(size_t, size_t, size_t, size_t)
{
    m_dirty = true;
}

void VMWareFramebufferConsole::refresh_task()
{
    while (1) {
        if (m_enabled.load() && m_dirty) {
            MUST(g_io_work->try_queue([this]() {
                MUST(m_parent_display_connector->flush_first_surface());
                m_dirty = false;
            }));
        }
        (void)Thread::current()->sleep(refresh_interval);
    }
}

void VMWareFramebufferConsole::enable()
{
    auto current_resolution = m_parent_display_connector->current_mode_setting();
    GenericFramebufferConsole::enable();
    m_width = current_resolution.horizontal_active;
    m_height = current_resolution.vertical_active;
    m_pitch = current_resolution.horizontal_stride;
}

u8* VMWareFramebufferConsole::framebuffer_data()
{
    return m_parent_display_connector->framebuffer_data();
}

}
